Vulnerability Intelligence Report
Fireware OS Stack-Based Buffer Overflow in Mobile Security epm Endpoint
CVE-2026-13086
A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS allows an unauthenticated remote attacker to execute arbitrary code.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
EPSS Probability:0.44%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2025.0 < 2026.2.2 (affected), 12.0 < 12.12.2 (affected), 2026.3 < 2026.3.1 (affected) |
| WatchGuard | Fireware OS | 12.0 < 12.5.20 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.441%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | WatchGuard Technologies, Inc. · Vendor · USA |
| Reserved | 2026-06-23T18:45:34 |
| Published | 2026-08-27T23:24:32 |
| Patch Date | 2026-08-27 |
| Last Updated | 2026-09-03T20:49:56 |
Community Chatter & Buzz